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* config/h8300/h8300.md (a peephole2): New. 

From-SVN: r69176
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Kazu Hirata 2003-07-10 06:18:30 +00:00 committed by Kazu Hirata
parent f9d232c3cb
commit ae12c66624
2 changed files with 34 additions and 0 deletions
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4
gcc/ChangeLog
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@ -1,3 +1,7 @@
2003-07-10 Kazu Hirata <kazu@cs.umass.edu>
* config/h8300/h8300.md (a peephole2): New.
2003-07-10 Alexandre Oliva <aoliva@redhat.com>
2001-12-13 Alexandre Oliva <aoliva@redhat.com>

30
gcc/config/h8300/h8300.md
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@ -4120,6 +4120,8 @@
;;
;; dead 0xffffff?? except -1 and -2 eq/ne xor.b and not.l
;; dead 0xffff??ff eq/ne xor.b and not.l
;; dead 0x40000000 (H8S) eq/ne rotl.l and dec.l
;; dead 0x80000000 eq/ne rotl.l and dec.l
;;
;; live 1 geu/ltu copy and shar.l
;; live 3 (H8S) geu/ltu copy and shar.l
@ -4248,6 +4250,34 @@
(pc)))]
"operands[4] = GEN_INT (INTVAL (operands[1]) ^ -1);")
(define_peephole2
[(set (cc0)
(compare (match_operand:SI 0 "register_operand" "")
(match_operand:SI 1 "const_int_operand" "")))
(set (pc)
(if_then_else (match_operator 3 "eqne_operator"
[(cc0) (const_int 0)])
(label_ref (match_operand 2 "" ""))
(pc)))]
"(TARGET_H8300H || TARGET_H8300S)
&& peep2_reg_dead_p (1, operands[0])
&& (INTVAL (operands[1]) == -2147483648
|| (TARGET_H8300S && INTVAL (operands[1]) == 1073741824))"
[(set (match_dup 0)
(rotate:SI (match_dup 0)
(match_dup 4)))
(set (match_dup 0)
(unspec:SI [(match_dup 0)
(const_int -1)]
UNSPEC_INCDEC))
(set (cc0)
(match_dup 0))
(set (pc)
(if_then_else (match_op_dup 3 [(cc0) (const_int 0)])
(label_ref (match_dup 2))
(pc)))]
"operands[4] = GEN_INT (INTVAL (operands[1]) == -2147483648 ? 1 : 2);")
;; Transform
;;
;; cmp.l #1,er0